Elevator-door construction



J. c. HEINZELMAN.

ELEVATOR DOORBONSTRUCTION.

0mm Z 1,. J v a APPLlCATlON FILED OCT. 22. 1920.

J. C. HEINZELMAN- ELEVATOR D'OOR CONSTRUCTION.

APPLICATION FILED OCT. 22. 1920.

Patented May 9, 1922.

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3 6, .7Z .10 9, 70 77 44 ---74 l 'l 4X Z2 79 8 Z5 I 21 80 INVENTOR monusys JOHN C. HEINZELMAN, OF CHICAGO, ILLINOIS nnnvaron-noon CONSTRUCTION.

Application filed October 22, 1920. Serial No. 418,699.

To (IZZLUiZ-ODt it may concern:

Be it known that I, JOHN C. HEINZELMAN.

, a citizen of Germany, (who has declared his intention of becoming a citizen of the United States) and aresident of Chicago, in the county of Cookand State of Illinois,

have invented a new and useful Improve ment in Elevator-Door Constructions, of which the following is a full, clear, and exact description. a My invention relates to'improvements in elevator door constructions, and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide an elevator door construction having a door of the folding or jack-knife type and a frame arranged with its'inner face substantially flush with an inner wall of the elevator shaft, wherefore the space between the elevator car and the walls of the elevator shaft may be reduced to a minimum, thereby obviating the necessity for providing the usual so-called trucking sill.

A further object of my invention is to provide a device of the type described that is provided with means for positively locking the door in opened position when the elevator car is positioned at a particular floor and with means for releasing the door when the car moves either above or below the level of the floor to permit the door to assume a closed position by reason of the force of gravity.

A further object of my invention is to provide a device of thetype described provided with means arranged to normally look the door in closed position and with other means operated when the car reaches the level of the floor to operate the first named means and release the door, Wherefore the latter may be opened at will.

A further object of my invention is to" provide in a device of the type described a door that is relatively simple in construction and operation, strong and durable, not

likely to get out of order easily, and thoroughly practical commercially.

Other objects and advantages will appear in the following specification, and the novel features of the invention will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings, forming part-of this application, in which Fig. l is a side elevation of a portion of the device as seen from the elevator shaft,

Fig. 2 is a view of the reverse side of the mechanism shown in Fig. 1,

Fig. 3 is an enlarged section along the line 33 of Fig. 1, showing also the cooperating. means carried by a car in the elevator system in whi'ch'the device is carried out, i

Fig. 4 is "a section along the'line 4c-r of Fig. 5is a section along the line 5-5 of Fig. I, V 2 'i Fig. '6 is a section along the line 6.6 of Fig.1, H

Fig. 7 is an end view of an enlarged fragmentary portion of the device,

Fig. ,8 is aside elevation of the portion of the deviceshown inFig. 7,

Fig. 9 is a detail of another portion of the device, and

Fig. 10 is a section along the line 10-10 showing the door'in' opened position.

In carrying out my inventioml make use of a frame for the elevator'door opening in the wall 102 of an elevator well that consists preferably of side members 1 and 2 fragmentary and a top frame member 3. "A housing open.

atone side is provided by a channel 4 that is vertically positioned and secured to the side frame member 1, as shown. A, carrying plate 5 formed of an angle iron is secure to the side member 2. IA second carrying plate 6 which is also shown as an'angle iron is secured to the channel housing 4 by means of bolts or rivets 7 and hasone side dis-. posed parallel with the sides of the channel housing. Guide members 88 are secured to'the carrying plates 5 and Gin any suitable manneras by means of bolts 9 and are formed to 20.

provide opposing guideways A door comprising an upper section 10 ures 7 and 8 of the drawings, it will be noted that the lower section 12 has a vertically extending-kerf 16 in its lower edge at a spaced distance from each lower corner thereof, thereby providing strips 16 which are bent upwardly and secured to the main body of the section 12 by screws 17 to form bearings for stub shafts 18-18. Mounted upon the outer end of each of the stub shafts 1818 is a roller 19 positioned within one of the guideways 20 to have a rolling contact with the walls thereof.

11 cable 22 having its lower end secured to a fastening plate 21 mounted on each of the stub shafts 18 extends upwardly and is passed around guide pulleys 23. A counter weight 24 is secured to the upper end of each of the cables 22, as shown.

A horizontal reenforcing bar 25 is secured to the lower section 12 by screws 26 as shown in Fig. 1. A rotatable disk 27 is mounted on a stub shaft 28 projecting laterally from the lower section 12 intermediate its side edges and at a spaced distance above the reenforcing bar Oppositely extending arms 29 and 30 have their inner ends pivoted to the rotatable disk at diametrically opposed points by pins 31 and 32, respectively. The outer end of the arm 30 is secured at 33 to a bar 34 that is slidably disposed in a keeper 35 and has its outer end 36 bent laterally. The laterally bent portion 36 is provided with a detent 37 arranged to enter a notch 38 in a plate 39 that is secured to the carrying plate 6 in any suitable manner as by means of bolts 40. In a like manner, the arm 29 has its outer end secured at 41 to a bar 42 slidably disposed in a keeper 43. The laterally bent portion 44 of the bar 42 is formed with a detent 45 arranged to enter a notch 46 in a plate 47 secured to the carrying plate 5. A vertically extending spring 48 having its upper endsecured at 49 to the rotatable disk 27 and having its lower end secured to the reenforcing bar 25 normally holds the rotatable disk in the position shown in Fig. 1, wherefore the detents 37 and 45 are disposed in the notches 38 and 46, respectively.

t push rod 50 having is inner end pivoted at 51 to a link 52 is slidably dis posed in an opening in the wall of the channel housing 4 and has its outer end in contact with the laterally extending portion 36 of the bar 34. The link 52 is pivoted at 53 to a rocker arm 53 that is rigidly mounted on a vertically extending rock shaft 54. The vertically extending rock shaft 54 is journalled in brackets 55 and 56 that project from the inner wall of the channel housing 4.

Referring now particularly to Figures 3 and 4, it will be observed that a second rocker arm 57 that is also rigidly mounted on the rock shaft 54 has its outer end pivoted to a finger 59 that is slidably disposed in a recess 60 provided in a lug 61 that is secured to the inner wall of the channel housing 4. A spring 62 connecting the free outer end of the rocker arm 53 with the inner Wall of the housing 4 tends to hold the former in the position shown in Fig. 4.

A pulley 63 mounted on a stub shaft 64 journalled in bearings 67 and 71 projecting from the inner walls of the channel housing 4 adjacent the upper end thereof is formed with a plurality of grooves in its peripheral edge adapted to receive a cable 65. One end of the cable 65 is secured to the pulley 63 while the other end depends therebelow and carries a handle 66 adapted to be grasped in order to conveniently efiect the rotation of the pulley. The shaft 64 has a gear 68 mounted thereon. The gear 68 meshes with a gear 69 carried by a horizontal shaft 70 that is journalled in the lugs 71 and 72. I

Operation of the pulley 63 occasions the rotation of the shaft 70. An arm 7 3 having one end formed into a collar 74 rigidly mounted on the shaft 70 has its other end pivoted at 75 to links 76. The links 76 have a pivotal connection with a bracket 77 that is secured by bolts 78 to the upper section of the door adjacent the lower end thereof.

A second horizontally disposed shaft 79 is journalled in the lug 72 and in the flange of the channel housing, as best seen in Figures 1 and 5. A locking pawl 80 mounted on the shaft 79 is formed with a notch 99 in its lower end for a purpose which will be hereinafter set forth. The locking pawl 80 is secured to the shaft 79 to rotate therewith by means of a set screw 81. A. weight 82 is eccentrically mounted on the shaft 79, as shown. [in arm 83, having one end rigidly mounted on the shaft 79 has its other end pivoted at 84 to a link 85 having a loose pivotal connection with the vertical arm 85 of an L-shaped plate having its horizontal arm 86 rigidly mounted on a vertically ex;- tending rock shaft 87 that is journalled in brackets 88, and 56. A rocker arm 89 is rigidly mounted on the rock shaft 87 at a spaced distance above the point of connection of the rocker arm 57 with the rock shaft 54. The rocker arm 89 has a pivotal connection at 91 with a finger that is slidably disposed in an opening 95in a lug 97. A second rocker arm rigidly mounted on a shaft 87 at a spaced distance below the point of connection of the rocker arm 57 with the shaft 54 that is equal to the distance of the rocker arm 89 above the rocker arm 57 has a pivotal connection at 92 with the finger 94. The finger 94 is slidably disposed in an opening 96 in the lug 98. It is to be noted that the free ends of the fingers 93, 59. and 94 are in substantial alinement.

From the foregoing description of the various parts of the device. the operation thereof may be readily understood. A shoe 100 carried by the elevator car 101 contacts with the finger 59 when the car is at the level of a floor 103. The finger 59 is slidably moved, thereby occasioning the rocking of the rock shaft 54 and moving the push rod 50 against the laterally bent portion 36 of the plate 34. This movement of the push rod 50 is against the tension of the spring 62 and the movement of the arm 30 and the consequent rotation of the disk 27 against the tension of the spring 48 moves the arm 29 to cause the withdrawal of the detents 45 and 37 respectively from the notches 46 and 38, thereby releasing the lower section of the door. The handle 66 is then grasped and the shaft 70 rotated in the manner described. The lower end of the arm 7 3 is thus rotated in an anticlockwise directionabout the central axis of the shaft 70, thereby drawing the lower end of the lower section 12 vertically and cansing the adjacent ends of the sections 10 and 12 of the door to move laterally of the outer.

face of the door frame. As the movement of the operating arm 73 is continued, the angle between the connected ends of the sections 10 and 12 will be decreased and the lower section 12 will be moved upwardly to-. ward a horizontal position at the upper end of the door frame. The movements of the upper section and of the lower section just described are possible, since the upper section 10 is beveled along its upper edge at 104 and at its lower edge at 105 and the lower section 12 is beveled along its upper edge at 106. The counterweights 24 aid in moving the lower portion of the section 12 upwardly, the rollers 19 moving in the guideways 20.

The action of the eccentrically mounted weight on the locking member causes the hooked lower end of the'latter to engage with the lower edge of the section 12, thereby locking the door in opened position. As the car moves upwardly, the shoe 100 engages with the finger 93 to occasion the operation of the shaft 7 9, thereby causing the locking member 80 to disengage the section12 and permitting the latter to assume by gravity the-position shown in the drawings. As the car moves downwardly below the level of the floor, the shoe 100 engages with the finger 94 to accomplish the same result. Consequently, it will be observed that the door is positively locked in opened position when the car is at the level of the floor and that the movement of the car either upwardly or downwardly will operate the locking mechanism to release the door, whereby the latter assumes a closed position on account of the force of gravity. It will also be noted that the door, upon assuming its closed position will be automatically locked in closed position until the elevator car reaches the level of the floor and engages with the finger 59.

The inner face of the door frame is substantially flush with the inner wall of the 2. In an elevator construction, a frame for an opening in the'wall of an elevator well, a collapsible door hinged at its upper edge to said frame, means'for moving said door into collapsed position, gravity controlled means for locking said door in collapsed position, and means for operating said last named" means to release the door. V

3. In an elevator construction, a frame for an opening in thewall of an elevator: well, a collapsible door hinged at its upper edge to said frame, manually operable means for moving said door into collapsed position, gravity controlled means for locking said door in collapsedposition, and means for operating said last named means to release the door. f i

4. In an elevator construction, a frame for an opening in the wall of an elevator well, a collapsible door hinged at its upper edge to said frame, manually operable means for moving said door into collapsed position, gravity controlled means for locking said door in collapsed position, means for operating said last named means to release the door, and a contact member carried by a car moving in the well for actuating said last named means when the car is in a certain position with respect to the opening in the I wall of the well.

5. In an elevator construction, a framefor an opening in the wall of an elevator well, a. collapsible door hinged at its upper edge to said frame, manually operable means for moving said door intov collapsed position.

gravity controlled means for locking said said frame, manually operable means for moving said door into collapsed position, gravity controlled means for locking said door in collapsed position, means for operating said last named means to release the door, a contact member carried by a car moving in the well for actuating said last named means when the car is in a certain position with respect to the opening in the wall of the well, means for locking said door in extended ore-losed position, and means for operating said last named locking means to release the door, said last named means being arranged to be actuated by the said contact member carried by the car when the car is in a certain position with respect to the opening in the wall of the well.

7. In an elevator construction, a frame for an opening in the wall of an elevator well, a collapsible door hinged at its upper edge to said frame, manually operable means for moving said door into collapsed position, gravity controlled means for locking sait door in collapsed position, means for operatingsaid last named meansto release the door, and a contact member carried by a car moving in the well for actuating said last named means when the car has been moved either above or below the level of the bottom member of the said door frame.

8. In an elevator construction, a frame for an opening in the wall of an elevator well, a collapsible door comprising an upper section hinged at its upper edge to said frame and a lower section hinged to said upper section, means for collapsing the door to occasion a movement of the lower edge of said lower section toward the upper edge of the upper section, means for guiding the movement of said lower section, a rotatable horizontal shaft, a latching member carried by said shaft and provided with a hook adapted to engage said lower section at its lower edge when the door is in collapsed position, a weight mounted eccentrically on the shaft for holding the hook normally in engagement with said lower section, and means for rotating the said shaft to cause said hook to disengage the lower section, whereby said door is permitted to move into extended po sition.

9. In an elevator construction, an elevator well having an opening in its wall, a door frame arranged with its inner face substantially flush with the inner wall of the well, a collapsible door comprising an upper tion hinged at its upper edge to said frame, a lower section hinged to said upper section, and means operable interiorly of the elevator well for collapsing the door, whereby the lower edge of the lower section is moved vertically toward the upper edge of the upper section and the adjacent edges of the two sections are moved laterally of the outer face of the frame.

JOHN C. HEINZELMAN. 

